[Bug tree-optimization/116819] New: [15 Regression] ICE in vect_transform_stmt

[ktkachov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116819

            Bug ID: 116819
           Summary: [15 Regression] ICE in vect_transform_stmt
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

char a, b;
const unsigned long long &c(const unsigned long long &d,
                            const unsigned long long &e) {
  if (d < e)
    return e;
  return d;
}
unsigned long long *f;
void g() {
  for (char h = 2; h < 9; h += 2) {
    a = !c(f[h - 2], 70);
    const unsigned long long &i = c(0, f[h - 1]);
    b = i;
  }
}

ICEs on aarch64 g++ with -O3:
0x251e25b internal_error(char const*, ...)
        $SRC/gcc/diagnostic-global-context.cc:517
0x80f93f fancy_abort(char const*, int, char const*)
        $SRC/gcc/diagnostic.cc:1512
0x15c69f3 vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
        $SRC/gcc/tree-vect-stmts.cc:13609
0x160f047 vect_schedule_slp_node
        $SRC/gcc/tree-vect-slp.cc:10695
0x1627093 vect_schedule_slp_node
        $SRC/gcc/tree-vect-slp.cc:10482
0x1627093 vect_schedule_scc
        $SRC/gcc/tree-vect-slp.cc:10933
0x162702f vect_schedule_scc
        $SRC/gcc/tree-vect-slp.cc:10914
0x162702f vect_schedule_scc
        $SRC/gcc/tree-vect-slp.cc:10914
0x162702f vect_schedule_scc
        $SRC/gcc/tree-vect-slp.cc:10914
0x16274a3 vect_schedule_slp(vec_info*, vec<_slp_instance*, va_heap, vl_ptr>
const&)
        $SRC/gcc/tree-vect-slp.cc:11078
0x15eab23 vect_transform_loop(_loop_vec_info*, gimple*)
        $SRC/gcc/tree-vect-loop.cc:12356
0x163894f vect_transform_loops
        $SRC/gcc/tree-vectorizer.cc:1010
0x16390ef try_vectorize_loop_1
        $SRC/gcc/tree-vectorizer.cc:1156
0x16390ef try_vectorize_loop
        $SRC/gcc/tree-vectorizer.cc:1186
0x1639747 execute
        $SRC/gcc/tree-vectorizer.cc:1302
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Please include the complete backtrace with any bug report.
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